We had some money that had to be spent quicly at the end of last term, so I got some of these Easi-View Visualiser for Schools At first glance, they seem fine. The image is on a par with the much more expensive genie-vision things we have. They don't have the fancy split displays etc., but the staff don't use these anyway. If they can prevent having to run off 30 copies of everything, then they should be cost-effective.